一、前言高粱是吉林省的主要粮食作物之一,是一种比较喜温、喜光照、耐旱的作物。中熟品种,播种至成熟需125-135天,≥10℃积温2500～2700度-日,5～9月平均气温和(∑T_(5-9))80～90度-日,需水量400～500毫米,5～9月日照时数1200小时左右为宜。由于本省地形复杂,气候类型多样,各地农业气候资源差别很大(80％保证率下,全省各地≥10℃积温变幅为1900-2900度-日,≥10℃期间日数为118～150天,∑T_(5-9)为69～93度-日,5～9月降雨量(R_(5-9))平均值330～750毫米,5～9月日照时数1000～1300),因而导致高粱产量 I. Introduction Sorghum is one of the main grain crops in Jilin Province and is a kind of crop that is warm, happy and drought tolerant. Medium mature varieties, sowing to maturity to be 125-135 days, ≥ 10 ℃ accumulated temperature 2500 ~ 2700 degrees - day, 5 ~ September average temperature and (ΣT_ (5-9)) 80 ~ 90 degrees - day, water demand 400 ~ 500 mm, May-September sunshine duration of 1200 hours is appropriate. Due to the complex terrain and diverse climatic types in the province, agricultural climatic resources vary widely (80% of guaranteed rates of ≥10 ℃ accumulated temperature range of 1900-2900 ℃ -day and ≥10 ℃ of days of 118-150 days , ΣT_ (5-9) was 69-93 degrees-day, and the average precipitation of R_ (5-9) from May to September was 330-750 mm and the sunshine duration was from 1000 to 1300 in May to September) Lead to sorghum production